Microbial transformations have been employed as a means of preparing analogues of the resorcylic acid lactone zearalenone. Microbial transformation products were initially identified by thin-layer chromatography of fermentation extracta and then prepared by large- scale incubations. Each metabolite was subjected to structural elucidation employing carbon- 13 and proton NMR, mass spectrometry, and infrared analysis. Metabolites were identified ...
